Alam , S A , Huang , J , Stadt , K J , Comeau , P G , Dawson , A , Gea-Izquierdo , G , Aakala , T , Hölttä , T S , Vesala , T V , Mäkelä , A & Berninger , F A 2017 , ' Effects of competition, drought stress and photosynthetic productivity on the radial growth of white spruce in western Canada ' , Frontiers in plant science , vol. 8 , 1915 . https://doi.org/10.3389/fpls.2017.01915
Title: | Effects of competition, drought stress and photosynthetic productivity on the radial growth of white spruce in western Canada |
Author: | Alam, Syed Ashraful; Huang, Jianguo; Stadt, Kenneth J.; Comeau, Philip G.; Dawson, Andria; Gea-Izquierdo, Guillermo; Aakala, Tuomas; Hölttä, Teemu Samuli; Vesala, Timo Veikko; Mäkelä, Annikki; Berninger, Frank Alexander |
Contributor organization: | Department of Forest Sciences Forest Ecology and Management Viikki Plant Science Centre (ViPS) Ecosystem processes (INAR Forest Sciences) Department of Physics Micrometeorology and biogeochemical cycles Annikki Mäkelä-Carter / Principal Investigator Forest Modelling Group |
Date: | 2017-11-07 |
Language: | eng |
Number of pages: | 15 |
Belongs to series: | Frontiers in plant science |
ISSN: | 1664-462X |
DOI: | https://doi.org/10.3389/fpls.2017.01915 |
URI: | http://hdl.handle.net/10138/228766 |
Abstract: | Understanding the complex interactions of competition, climate warming-induced drought stress, and photosynthetic productivity on the radial growth of trees is central to linking climate change impacts on tree growth, stand structure and in general, forest productivity. Using a mixed modelling approach, a stand-level photosynthetic production model, climate, stand competition and tree-ring data from mixedwood stands in western Canada, we investigated the radial growth response of white spruce (Picea glauca (Moench.) Voss) to simulated annual photosynthetic production, simulated drought stress, and tree and stand level competition. The long-term (~80-year) radial growth of white spruce was constrained mostly by competition, as measured by total basal area, with minor effects from drought. There was no relation of competition and drought on tree growth but dominant trees increased their growth more strongly to increases in modelled photosynthetic productivity, indicating asymmetric competition. Our results indicate a co-limitation of drought and climatic factors inhibiting photosynthetic productivity for radial growth of white spruce in western Canada. These results illustrate how a modelling approach can separate the complex factors regulating both multi-decadal average radial growth and interannual radial growth variations of white spruce, and contribute to advance our understanding on sustainable management of mixedwood boreal forests in western Canada. |
Subject: |
4112 Forestry
Boreal forest Drought Photosynthetic production Tree-tree competition Tree growth Western Canada |
Peer reviewed: | Yes |
Rights: | cc_by |
Usage restriction: | openAccess |
Self-archived version: | publishedVersion |
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